smc256af Numonyx, smc256af Datasheet - Page 53

• Manufacturer Part Number: smc256af
• Description: 32 Mbyte, 64 Mbyte, 128 Mbyte, 256 Mbyte And 512 Mbyte 3.3 V / 5 V Supply Compactflash? Card
• Manufacturer: Numonyx

SMCxxxAF
9.2
Execute Drive Diagnostic command (90h)
This command performs the internal diagnostic tests implemented by the card.
In PCMCIA configuration, this command only runs on the card which is addressed by the
drive/head register when the command is issued. This is because PCMCIA card interface
does not allow for direct inter-drive communication.
In True IDE mode, the Drive bit is ignored and the diagnostic command is executed by both
the master and the slave with the master responding with the status for both devices.
Table 48
codes shown in
Table 48.
Table 49.
Command (7)
Sect Num (3)
Sect Cnt (2)
Cyl High (5)
Cyl Low (4)
Feature (1)
C/D/H (6)
Bit
defines the Execute Drive Diagnostic command byte sequence. The diagnostic
Execute Drive Diagnostic
Diagnostic codes
Code
8Xh
01h
02h
03h
04h
05h
Table 49
7
are returned in the error register at the end of the command.
X
6
5
Drive
4
Controlling microprocessor error
Slave error in True IDE mode
90h
Formatter device error
X
X
X
X
X
ECC circuitry error
Sector buffer error
No error detected
3
Error type
CF-ATA command description
2
X
1
0
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